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Walworth County, Wisconsin

Zoning, building permits and septic rules in Town of Lyons, Wisconsin

Town of Lyons is a town in Walworth County, Wisconsin. Town of Lyons adopts its own zoning, so inside its limits Town of Lyons’s rules apply, not the county’s. Septic permits inside Town of Lyons come from Walworth County. 3 rules below are quoted from official sources and independently re-checked, most recently on November 7, 2026. Rules for unincorporated land are on the Walworth County page.

Answers from the rulebook for Town of Lyons

Town of Lyons’s own rules

  • Building permitRequired

    New one- and two-family residential construction inside the Town of Lyons that is within Walworth County's zoning jurisdiction.

    • For a County zoning permit that is issued, the property owner must obtain a building permit through the appropriate Township Building Inspector.
    • The Town's building-inspector requirements state that no building permit can be issued before Walworth County has issued the zoning permit.
    • The Town states that a building-permit application does not authorize construction to start.
    “Once the County permits are issued the applicant shall contact the appropriate Town for the applicable Town Building Permit.”
  • Local zoningPresent (with conditions)

    Land inside the Town of Lyons, Walworth County, Wisconsin, is subject to the Walworth County Zoning Ordinance, which the Town ratified and jointly administers with the County.

    • The Town of Lyons ratified the Walworth County Zoning Ordinance in September 1975.
    • Walworth County's General Zoning Code applies to unincorporated Walworth County except the Town of Bloomfield.
    • Walworth County states that it does not have non-shoreland zoning jurisdiction in extraterritorial-zoning areas around the City of Elkhorn, Village of Williams Bay, and Village of Fontana.
    “The Town of Lyons is under the jurisdiction of the Walworth County Zoning Ordinance.”
  • Who permits septicCounty (with conditions)

    Sanitary permits and private septic-system installation for a single-family residence inside the Town of Lyons that is within Walworth County's zoning jurisdiction.

    • Walworth County Land Use and Resource Management reviews and issues the sanitary, zoning, and erosion-control permits together.
    • The sanitary permit regulates where and what type and size of septic system is installed.
    “A sanitary permit, which regulates where, what type and size of septic system is being installed on the property. An erosion control permit, which regulates what land will be disturbed, for how long and how will it be stabilized during construction. The Walworth County Land Use and Resource Management Department reviews and issues all three permits together to assure fewer problems in the construction process.”

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

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